A bourdon-tube pressure transmitter typically outputs what type of electrical signal?

A bourdon-tube pressure transmitter typically outputs what type of electrical signal?

• A. A 4-20 mA current loop or a voltage signal
• B. Digital Ethernet signal
• C. Pulsed width modulated signal
• D. Radio frequency modulated signal

Answer: (B)

A bourdon-tube pressure transmitter converts the mechanical deformation of the Bourdon tube into an electrical signal that represents pressure. In most industrial setups that signal is analog and carried in a 4-20 mA current loop, which is favored because it stays accurate over long distances, is less affected by wiring resistance, and is easy to read with controllers and data acquisition systems. Some transmitters offer a voltage output instead, but current loops are the standard in field installations. Digital Ethernet signals would imply a network data path, which isn’t the typical direct output of a basic transmitter and usually requires additional interfaces or protocols. Pulsed width modulation or radio-frequency signals aren’t the standard form for the basic measurement output either; they’re either used for control signals or wireless communication in different contexts, not for the ordinary analog pressure signal from a bourdon-tube device.

A bourdon-tube pressure transmitter converts the mechanical deformation of the Bourdon tube into an electrical signal that represents pressure. In most industrial setups that signal is analog and carried in a 4-20 mA current loop, which is favored because it stays accurate over long distances, is less affected by wiring resistance, and is easy to read with controllers and data acquisition systems. Some transmitters offer a voltage output instead, but current loops are the standard in field installations. Digital Ethernet signals would imply a network data path, which isn’t the typical direct output of a basic transmitter and usually requires additional interfaces or protocols. Pulsed width modulation or radio-frequency signals aren’t the standard form for the basic measurement output either; they’re either used for control signals or wireless communication in different contexts, not for the ordinary analog pressure signal from a bourdon-tube device.